The Summer of Living Dangerously (But Safely) - California Land ...
The Summer of Living Dangerously (But Safely) - California Land ...
The Summer of Living Dangerously (But Safely) - California Land ...
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when the PDL antenna started making a loud buzzing sound<br />
and the hair on my arms and neck started standing up. I quickly<br />
jumped down and put the equipment on the ground. I was<br />
sure that lightning was going to strike but thankfully it didn’t. I<br />
used the opportunity to explain to Conor what to do in the<br />
event <strong>of</strong> such an emergency. First grab the mine radio and call<br />
for radio silence and ask for the mine foreman, then state “man<br />
down” and give the location as concisely as possible. <strong>The</strong><br />
mine procedure in such an event is that all equipment and<br />
vehicles throughout the mine are immediately stopped and<br />
radio silence is held until instructed otherwise. Each mine has<br />
an ambulance and a crew <strong>of</strong> EMT’s called “first responders”<br />
and they are dispatched to the scene and usually can arrive<br />
within minutes. Lightning strikes <strong>of</strong>ten cause burns and can<br />
sometimes cause the victim’s heart to stop so CPR training<br />
is useful. (I am trained in the procedure and update my training<br />
annually, Conor is not yet trained). All in all it was a close<br />
call and a ‘teachable moment’ but with no ill effects.<br />
Surveying when lightning strikes are possible is a needless<br />
risk but one easily overlooked.<br />
<strong>The</strong> following week I took the boy, by now an old hand at<br />
mine surveying, to Newmont’s LoneTree mine, which is now<br />
closed and undergoing reclamation. One state-mandated closure<br />
requirement is to monitor the tails surface to see how the<br />
material is solidifying or consolidating, as the process is called.<br />
All <strong>of</strong> the surface water on these tails has long since soaked in<br />
or evaporated. Last winter I set 15 monuments in the 200-acre<br />
tails impoundment. <strong>The</strong>se monuments (except for one) are 10<br />
foot long pieces <strong>of</strong> angle iron with a reflective prism on the top<br />
and a cross bar welded 4 feet below the top. <strong>The</strong>y are driven<br />
in until the cross bar rests on the surface and the prisms are<br />
pointed toward a permanent control station on a hill next to the<br />
dam. One monument differed from the above<br />
specifications because it was placed in the<br />
area where the pool used to be and the mud<br />
there was still quite s<strong>of</strong>t. This particular spot<br />
required a 20 foot section <strong>of</strong> angle iron plus a<br />
rubber mat and piece <strong>of</strong> plywood for the<br />
cross bar to rest upon. Setting that monument<br />
was where I originally developed the<br />
previously described plywood snowshoe<br />
technique although I must point out that once<br />
such a plank becomes slick with mud, it is<br />
easy to fall <strong>of</strong>f and become mired up to your<br />
waist in the tails. Not that I would know that<br />
first hand…<br />
So it is time for the quarterly observation<br />
<strong>of</strong> the tails monuments at LoneTree. I set up<br />
my total station on the permanent control<br />
point above the dam. It is an iron pipe in concrete<br />
with a bolt on the top on which to<br />
thread the total station, thereby removing<br />
instrument height from any subsidence calculations.<br />
<strong>The</strong> pipe, an old mine survey control<br />
point, was originally set by someone<br />
much taller than me so last winter to make it<br />
easier to use, I stacked some large rocks around the pipe to<br />
stand on. I was standing on said rocks when Conor pointed<br />
out a 3-inch long scorpion crawling out <strong>of</strong> the rocks next to my<br />
28<br />
<strong>The</strong> <strong>Summer</strong> <strong>of</strong> <strong>Living</strong> <strong>Dangerously</strong> (<strong>But</strong> <strong>Safely</strong>)<br />
boot. A sting from such a creature could in a worst-case be<br />
fatal, but even the best case scenario would still be pretty<br />
crappy. We coaxed our little friend, who was the largest scorpion<br />
I’ve ever seen in this part <strong>of</strong> the country, into a split-open<br />
water bottle and duct taped it shut. <strong>The</strong> scorpion for lived all<br />
summer in a terrarium in our kitchen. I called him “Rudy”, after<br />
Rudolf Schenker, the guitarist for 80’s rock band <strong>The</strong><br />
Scorpions. Rudy loved big crickets and grasshoppers and<br />
really did glow in the dark when lit with a black light. Alas, we<br />
set him free he is now back slinking with his carapace clad<br />
compadres. Poisonous creatures abound in the Great Basin<br />
and avoidance is the best way to deal with them (rather than<br />
making them a house guest). By the way, the monument with<br />
the 20-foot section <strong>of</strong> angle iron has since sunk out <strong>of</strong> site, plywood,<br />
rubber mat and all. I’d have to say that consolidation is<br />
not yet complete.<br />
Next up for the young surveyor was a series <strong>of</strong> aerial photo<br />
control projects. On days when we were not surveying at the<br />
Phoenix tails dam, we had to set 83 flight crosses at 6 different<br />
mine sites and associated exploration areas throughout<br />
Northern Nevada. Given the terrain, the use <strong>of</strong> ATV’s was not<br />
only warranted, it was critical. ATV use is one the things where<br />
specific task training is required, and so I task-trained perennial<br />
good sport Conor. Commencing this type <strong>of</strong> operation<br />
means outfitting each ATV to carry: flight crosses – each leg<br />
pre-assembled as a twenty foot section stapled to a piece <strong>of</strong><br />
lath at each end and rolled up, 60d nails and shiners to secure<br />
the 20 foot flight crosses against the almost constant desert<br />
winds, a hammer, the GPS equipment, (again the trusty backpack<br />
clad Trimble 4700), a rod and bipod, a handlebar mounted<br />
handheld GPS device for navigating to the pre-computed<br />
lats and longs, and most important since it is the desert in<br />
summer, bottles <strong>of</strong> water.<br />
<strong>The</strong> first project required carrying the<br />
GPS base station equipment as well as the<br />
other gear to a control point on the top <strong>of</strong> a<br />
mountain. <strong>The</strong> trail up was an old drill road,<br />
overgrown with brush and with notorious<br />
switchbacks from the valley floor, which was<br />
situated at around 5000 feet above sea level,<br />
to a saddle near the top at an elevation <strong>of</strong><br />
over 8500 feet. Loaded down with gear and<br />
climbing such a steep grade in July, both<br />
four wheelers battled overheating problems<br />
the whole way. This project was relatively<br />
uneventful although I confess it is best not to<br />
look over the downhill side <strong>of</strong> that road while<br />
riding on it. Regardless <strong>of</strong> the summer heat,<br />
I insist on proper safety gear including steeltoed<br />
boots and helmets. Too many ATV<br />
fatalities involve rollovers by people not<br />
wearing helmets.<br />
<strong>The</strong> next site was mostly in an arid valley<br />
in an area bracketed by the Union Pacific<br />
Railroad main line and the always-on-it’slast-legs<br />
Humboldt River. (<strong>The</strong> Donner party thought the<br />
waters <strong>of</strong> the Humboldt to be almost undrinkable, even for the<br />
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